Stop-motion.



J. GOOD.' STOP MOTION.

APPLICATION FILED JULY 25,1912.

1,094,435, Patented Apr. 28, 1914,

PATENT OFFICE.

UNITED STATES JOHN GOOD, OF NEW YORK, N. Y.

STOP-MOTION.

To all 'whom it may concern Be it known that I, JOHN G001), a citizen of the United States, residing in the borough of Brooklyn, county of Kings, city and State of New York, have invented certain new and useful Improvements in Stop-Motions, of which the following is a full, true, and concise specification.

This invention relates more particularly to long line spinnin machines, the object being to provide improved means for automatically throwing off the power in event of breaking of the yarn or twine. To this end a power throw-ofi or controlling device, which may be of any suitable nature, for example, a belt-shifter, is controlled by a part driven by the yarn. For this purpose the preferred embodiment of the invention utilizes the bobbin tension mechanism, which may be of any suitable form for applying the requisite tension to the yarn, means he ing provided whereby the immediate slowing down of this friction mechanism on breaking of the yarn causes the actuation of the power throw-oft.

The invention consists in certain features and combinations, hereinafter described and more particularly pointed out in the claims, whereby a reliable and easy action is secured.

In the drawings showing the preferred or illustrative form of the invention: Figure l is a fragmentary view, partly in section and partly in elevation, showing as much of a long line spinning machine as is necessary for an understanding of this invention, a suitable power throw-off or controller being indicated by part of a belt-shifter, and the automatic control of the throw-off being shown in connection with a suitable form of bobbin friction; Fig. 2 is a fragmentary sectional elevation, taken on the line II II of Fig. 1; and Fig. 3 is a similar view showing the parts in the shifted position which they assume on breaking of the yarn, the power throwoif being thereby actuated.

A is a power shaft, B is the usual flier, in the present case shown as a can, O is the bobbin spindle, D is the bobbin reciprocated thereon by usual means (not shown) and E is a pulley splined on the bobbin spindle.

The means for driving the flier from the power shaft A is indicated generally by H, K. F at the right of Fig. 1, and will not require explanation.

Specification of Letters Patent.

Application filed July 25,

Patented Apr. 28, 1914.

1912. Serial No. 711,407.

The bobbin D, bobbin spindle C and pulley E are driven by the yarn in winding 'on the bobbin, and M and N are other parts driven by the yarn, M being a band wheel connected with the pulley E by means of a belt 0.

is a part, preferably power-driven, which is connected with a yarn-driven part, as N, so that the two normally rotate or travel together, but the yarn-driven part is free to lag behind the other part on breaking of the yarn. As illustrated the part I may be merely a collar fixed to the power shaft by a set-screw. Means are provided between the parts N and P, which are held or remain inoperative or motionless during normal rotation of these parts together but are moved by reason and in event of such lagging of the yarn-driven part to actuate a power throw-0H. It is in this means that the invention more particularly resides, and the preferred embodiment thereof will presently be described.

In order to cause the yarn-driven part N to travel at the same speed with the powerdriven part P, and to cooperate therewith during normal running to keep a throw-off actuating member 11 from shifting, it is preferred to rotate the part N from the yarn by a drive having a ratio which would rotate the part N at higher speed than the power-driven part P. Said drive, however, includes a frictional slip element or elements enabling the yarn-driven part during normal running to be held with a suitable degree of pressure against a portion, as 10, on the power-driven part, or against the member 11, hereinafter more particularly described, which is interposed between the yarn-driven part and the power-driven part. Such frictional or slip provision constitutes also the means which provide the tension for the winding ya n.

The yarn-driven parts M and N are illustrated as similar to ordinary forms of ten sion couples. The part M is a band wheel and the part N a disk. A ring R of friction material is interposed between them, or secured to one and bearing against a frie tion surface 011 the other. The part M is loose on the drive shaft A, as is usual, and in this instance the part N is also loose thereon. The members of this friction coupple are pressed together in any suitable or usual manner, as by tension spring S acting through compression spring T; and any suitable or usual means are provided for varying the pressure, and consequently the tension of the yarn, in accordance with the winding of the yarn on the bobbin. As shown, the compression spring T is interposed between the part M and a ball thrust bearing V, which may be moved longitudinally of the power-shaft by means of a forked lever TV, pivoted to a suitable supporting bracket X, and operated through the spring S by suitable or usual automatic means (not shown), to vary the tension according to conditions. A thrust collar 20 is interposed between the parts N and P.

It is an important feature of the invention that the throw-off actuating member 11, when shifted from normal running position, acts as an eccentric upon the cooperating power throw-off part, thus insuring a gentle actuation of the latter and guarding against jars and breakage. The said member is illustrated as a circular disk or open ring encircling the power shaft. This member is substantially concentric with the axis of rotation during normal running and is moved eccentrically upon occurrence of an abnormal condition, being mounted for pivotal or swinging movement, as at 13, preferably upon one of the cooperating parts N or P, and, as shown. upon the former.

The provisions whereby the throw-off actuating member, as 11, is held normally in the condition shown in Fig. 2 and shifted upon breaking of the yarn as represented in Fig. 3, are susceptible of variation, but a construction substantially as herein illustrated is preferred for its reliability and simplicity. As shown, the parts P and N have contact portions in the form of oppositely projecting lugs 10 and 12, bearing against opposite sides of an inwardly-projecting lug let on the ring, which may be regarded as an interposed thrust connection. During normal running the portion 10 of the powerdriven part acts upon or opposes the ring in one direction, while the pivot 13 together with the lug 152, on the yarn-driven part, act thereon in the opposite direction, so that the ring is held rigidly in concentric relation. hen, however, the yarn-driven part lags, owing to breaking of the yarn. the ring 11 is released, and while it might then become eccentric by the effect of centrifugal force, a camming action is preferred as a positive though gentle means of securing the result. The camming means may be somewhat varied or its elements reversed, but as shown it comprises the lug 10 on the power-driven part P and a curved cam surface 15 on the inside of the ring 11. extending from the lug 14 with decreasing radius. Thus, upon the occurrence of lag the projection 10 travels along this cam surface so as to swing the ring eccentrically, whereby, due both to the nature of this camming action and to the eccentric action of the ring itself upon the part Y, a very quiet though prompt operation is secured. The extent of the swinging movement of the ring 11 may be limited by the contact of the lug 10 with a shoulder 16 at the end of the cam surface 15, but preferably a separate shoulder 18 is provided for this purpose, cooperating with another lug 17 projecting from the yarn-driven part N. By the cooperation of these elements the lug 10 is prevented from getting out of operative relation to the cam surface 15 and also kept from \vedging; and when the machine is started again the elements 10 and 1G enable the part P to drive the part N until normal running conditions are established.

Y is an element mounted on a stationary part or the frame of the machine, and constructed and arranged to be moved or caused to move by the member 11 when the latter is shifted. It may be of any suitable nature, but is preferably a trigger or detent lever which normally, that is, while the machine is running and the yarn is unbroken, holds the belt shifter in the on position. For this purpose the upper end of the trigger may bear against a shoulder 19 on the belt shifter. The tail of the trigger lever is disposed against or in proximity to the periphery of the member 11. In the construction shown it is pushed to one side by the member 11 when the latter is shifted to the position of Fig. 2. This removes the tip of the trigger lever from behind the shoulder 19, permitting the belt shifter to be thrown to off position by the action of a spring 20. The trigger or detent may be restored to or held in normal position, that is the position of Fig. 2, by any suitable means. In the illustrated construction g 'avity is relied upon for the purpose.

In operating, the flier and the other power-driven parts of the machine are operated in the usual way from the drive shaft A. The yarn as it is wound upon the bobbin drags the bobbin in the manner well known in the art. Thus the bobbin spindle, and from it the parts 11 and N loose on the drive shaft, are driven by the yarn. The connections are so proportioned and arranged that the part M is yarn-driven in the same direction as the power shaft but at a higher speed. The part M by frictional engagement drives the part N, but by reason of the connection of the latter with the power-driven part P its speed cannot exceed that of the power-driven part; hence slip occurs between the parts M and N, with fric tion that provides the tension for the bobbin. It results, also, that the part N exerts a thrust against the member 11 and the part P continuously during the normal operation of the machine. The lug 12 of the yarndriven part N presses against the lug 14c of the member 11 and holds it against the lug 10 of the power-driven part. In this way the member 11 is held against shifting. hen the yarn breaks, the frictionally coupled parts M and N naturally slacken speed, while the power-driven part I? continues to rotate as before. The angular velocity of the part N falls below that of P, so that the lug 1O rides along the cam surface 15, thus shifting the member 11 to actuate the power throw-ofli.

I claim:

1. I11 a spinning machine, the combination with parts adapted to rotate together, one of them being yarn-driven, of a throw-off actuating ring or disk which is mounted to 1'0- tate with said parts and is shifted eccentrically with respect to their axes upon lagging of the yarn-driven part.

2. In a spinning machine, a power-driven part and a yarn-driven part mounted to rotate in axial alinement, and a circular member mounted on one of said parts and having contact with both whereby said member remains substantially concentric with the axes of rotation during normal running and becomes eccentric in event of lagging of the yarn-driven part, in combination with a power controlling element adapted to be contacted and moved by said member upon the latter becoming eccentric.

8. In a spinning machine, a power-driven part and a yarn-driven part adapted to rotate together, a member encircling the axis of rotation and held in fixed relation to the same during normal running by the cooperation of said parts, and means whereby said member is shifted eccentrically by a camming action when the yarn-drivenpart lags relatively to the power-driven part, in combination with a power-controlling element adapted to be operated by said member when the latter is shifted.

4. In a spinning machine, a power-driven part and a yarn-driven part adapted to rotate together, a member encircling the axis of rotation and held in fixed relation to the same during normal running by the cooperation of said parts, means whereby said member shifted eccentrically by a camming action when the yarn-driven part lags relatively to the power-driven part, and a stop for limiting the extent of said camming action, in combination with a power controlling element adapted to be operated by said member when the latter is shifted.

5. In a spinning machine, a power-driven part and a yarn-driven part adapted to rotate together, and a circular member pivoted to one of said parts and having means of engagement with the other including a curved cam surface and a projection to ride thereon, whereby said member is rendered eccentric upon lagging of the yarn-driven part, in combination with a power-controlling element adapted to be operated by said member when the latter is shifted.

6. In a spinning machine, the combination with parts adapted to rotate together, one of them being yarn-driven, of a pivotally mounted throw-ofi' actuating ring encircling the aXis of rotation of said parts and having shoulders and a cam surface on its internal periphery, and projections on said parts adapted to co-act with said shoulders and cam surface, substantially as described.

T. In a power throw-off of a spinning machine, the combination of a yarndriven part and a power-driven part which normally rotate together, a power-controlling mem ber pivoted on one of said parts, and projections on said parts which normally press against opposite sides of said member.

8. In a spinning machine, the combination of parts adapted to rotate together, one of them being driven by the yarn, a ring encircling the axis of rotation of said parts, being pivoted on one part and the other part having a projection adapted to contact therewith, and a power throw-off controlled by said ring.

9. In a spinning machine, the combination of parts adapted to rotate together and means whereby one of them is driven by the yarn, a member pivoted on one part, said member forming a thrust connection between said parts during normal running and being shiftable by engagement with the. other part on lagging of the yarn-driven part, and a power throw-off controlled by said member.

10. In a spinning machine, the combination of parts adapted to rotate together and means whereby one of them is driven by the yarn, a member pivoted on one of said parts and having an abutment and a cam surface, a projection on the other part contacting with. said abutment during normal running and riding on said cam surface on lagging of the yarn-driven part, and means whereby such camming of said member throws off the power for the machine.

ll. Automatic power controlling means for spinning machines comprising the combination of parts adapted to rotate together and means whereby one of them is driven by the yarn, said parts having projections, and a member pivoted on one of said parts acted upon oppositely by said projections during normal. running, said member having a cam surface adapted to be engaged by a projection on the other part to shift said member on lagging-of the yarn-driven part.

12. Automatic power controlling means for spinning machines comprising the combination of parts adapted to rotate together and means whereby one of them is driven by the yarn, a member pivoted on one of specification in the presence of two Witsaid parts and having a cam surface ennesses. gaged by a projection on the other part, JOHN GOOD and means preventing said projection from getting out of operative relation to the cam Vitnesses: surface. H. E. KIMBALL,

In testimony whereof, I have signed this G. A. TAYLOR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner 0! Pntents.

Washington, D. 0." 

